1. Quasi-experimental designs that were not covered in the text. For example, you might use handout 14.1 and handout 14.2 to discuss the regression-discontinuity design; and
2. Sophisticated statistical treatments of quasi- experimental designs.
Useful classic resources for discussing advanced issues in quasi-experimental design include
Cook, T. D. & Campbell, D. T. (1979). Quasi-experimentation:
analysis for field settings. Chicago: Rand
Kenny, D. A. (1979). Correlation and causality. New York: John Wiley.
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